WO2018037536A1 - Cuve à circulation - Google Patents

Cuve à circulation Download PDF

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Publication number
WO2018037536A1
WO2018037536A1 PCT/JP2016/074831 JP2016074831W WO2018037536A1 WO 2018037536 A1 WO2018037536 A1 WO 2018037536A1 JP 2016074831 W JP2016074831 W JP 2016074831W WO 2018037536 A1 WO2018037536 A1 WO 2018037536A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
window member
lens
peripheral
window
Prior art date
Application number
PCT/JP2016/074831
Other languages
English (en)
Japanese (ja)
Inventor
悠佑 長井
渡邉　真人
Original Assignee
株式会社島津製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to PCT/JP2016/074831 priority Critical patent/WO2018037536A1/fr
Priority to US16/318,789 priority patent/US10578544B2/en
Priority to JP2018536006A priority patent/JP6551609B2/ja
Publication of WO2018037536A1 publication Critical patent/WO2018037536A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/05—Flow-through cuvettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/74—Optical detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N2021/0378—Shapes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N2021/0389—Windows
    • G01N2021/0392—Nonplanar windows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/74—Optical detectors
    • G01N2030/746—Optical detectors detecting along the line of flow, e.g. axial
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/063—Illuminating optical parts
    • G01N2201/0638—Refractive parts
    • G01N2201/0639—Sphere lens

Definitions

  • the present invention relates to a flow cell used for a detector of an analyzer such as a liquid chromatograph.
  • a method of irradiating a sample with light and analyzing the sample using transmitted light, reflected light, or scattered light is widely known, such as an absorbance measurement method.
  • a flow cell having a cell serving as a flow path through which a sample flows is used.
  • a transparent window member for taking light into the cell is attached to the flow cell.
  • transparent means that the transmittance is high (at least 80% or more) with respect to the wavelength of light used for analysis.
  • An example of the transparent window member is a flat window made of synthetic quartz.
  • a lens such as a hemispherical lens or a ball lens may be used in order to efficiently irradiate the sample flowing through the cell in the flow cell with light.
  • the lens may be disposed outside the window portion of the flow cell, but a lens is also used as a window member of the flow cell in order to reduce the number of components (see Patent Document 1).
  • JP 2014-55784 A Japanese Patent Publication No. 2012-522253
  • a resin packing having a certain degree of elasticity is arranged on the front side (cell side) and back side (side opposite the cell) of the lens, Generally, there is a method for preventing liquid leakage from the cell by stably fixing the lens at the end of the cell by pressing the back surface of the lens to the cell side via a resin packing with a screw-type fixing member. Yes.
  • the contact between the lens and the resin packing on the back side of the lens is preferably a surface contact, but it is difficult to manufacture a resin packing having the same curved surface as the curved surface of the lens, and the lens is held by a plurality of line contacts. That is the limit.
  • an object of the present invention is to provide a flow cell capable of stably fixing a window member having a lens function.
  • a flow cell according to the present invention has a cell for circulating a sample therein, an opening leading to the cell is provided on at least one end side of the cell, and a flat surface is provided at an edge of the opening.
  • a housing having a lens portion at the center and one and the other surface having a flat peripheral edge, and one surface of the peripheral edge is the flat surface of the housing so as to seal the opening
  • a window member provided opposite to the window member, provided on the opposite side of the cell with the window member interposed therebetween, and having a hole for allowing light to pass through in a central portion, and the other of the peripheral portions of the window member
  • a pressing member that is in surface contact with the surface and presses the window member toward the cell.
  • lens portion of the window member one having a convex lens on the surface opposite to the cell can be cited.
  • the convex lens has a side surface that is perpendicular to the peripheral surface or forms an angle larger than 90 degrees with respect to the peripheral surface. Then, it is easy to hold the window member with tweezers or the like.
  • the side surface of the convex lens may be a straight plane or a curved plane from the proximal end side to the distal end side of the lens.
  • the peripheral part of the window member has a light transmittance lower than that of the lens part. If it does so, it will become difficult for light to pass through parts other than the lens part of a window member, and the influence of scattered light etc. can be made small.
  • Such a structure can be realized by making the surface roughness of the peripheral edge portion rougher than that of the lens portion.
  • the window member has a lens portion at the center portion and one and the other surface have a flat peripheral portion, and one surface of the peripheral portion is a housing so as to seal the opening of the housing. It is provided facing the flat surface of the body, the pressing member is provided on the opposite side of the cell across the window member, and the window member is brought into surface contact with the other surface of the peripheral edge of the window member.
  • the window member can be stably fixed by the pressing member.
  • the flow cell 1 of this embodiment includes a cell 4 for circulating a sample inside a housing 2 and an inlet for introducing a liquid from one end side (left side in the figure) of the cell 4.
  • a flow path 6 and an outlet flow path 8 for discharging liquid from the other end side (right side in the figure) of the cell 4 are provided.
  • the housing 2 is provided with a window member attaching portion 12 for attaching the window member 14 to one end portion of the cell 4.
  • the window member attaching portion 12 is a concave portion dug down from the surface of the housing 2 toward one end portion of the cell 4 and has an inner diameter larger than the inner diameter of the cell 4.
  • An opening 10 leading to one end of the cell 4 is provided at the bottom of the window member mounting portion 12, and a window member 14 is disposed so as to seal the opening 10.
  • a circular depression is provided around the opening 10.
  • a ring-shaped resin packing 16 is fitted in a recess around the opening 10, and a part of the window member 14 having a lens portion 14 a (see FIG. 2) at the center is fitted.
  • both surfaces (surface on the cell 4 side and the surface on the opposite side) of the peripheral portion 14b of the window member 14 are flat surfaces, and the peripheral portion 14b is a ring-shaped resin packing. 18 is pressed to the resin packing 16 side by the fixing member 20. Screws that are screwed to each other are provided on the inner peripheral surface of the window member mounting portion 12 and the outer peripheral surface of the fixing member 20, and the center of the cell 4 is rotated by rotating the fixing member 20 about the central axis of the cell 4. Move in the axial direction. That is, by rotating the fixing member 20, the strength of the force that presses the peripheral edge portion 14 b of the window member 14 toward the resin packing 16 through the resin packing 18 is adjusted.
  • the same structure as the one end side of the cell 4 is also provided on the other end side (left side in the figure) of the cell 4 of the housing 2. That is, a window member attaching portion 24 for attaching the window member 26 to the other end portion of the cell 4 is provided on the other end portion side of the cell 4 of the housing 2.
  • the window member attaching portion 26 is a concave portion dug down from the surface of the housing 2 toward the other end portion of the cell 4, and has an inner diameter larger than the inner diameter of the cell 4.
  • An opening 22 leading to one end of the cell 4 is provided at the bottom of the window member mounting portion 24, and a window member 26 is disposed so as to seal the opening 22.
  • a circular depression is provided around the opening 22.
  • a ring-shaped resin packing 28 and a part of a window member 26 having a lens portion at the center are fitted in a recess around the opening 22.
  • the window member 26 has the same structure as the window member 14, and the flat peripheral edge of the window member 26 is pressed to the resin packing 28 side by the fixing member 32 via the ring-shaped resin packing 30. Screws that are screwed to each other are provided on the inner peripheral surface of the window member mounting portion 24 and the outer peripheral surface of the fixing member 32, and the center of the cell 4 is rotated by rotating the fixing member 32 about the central axis of the cell 4. Move in the axial direction. That is, by rotating the fixing member 32, the strength of the force that presses the peripheral edge of the window member 26 toward the resin packing 28 via the resin packing 30 is adjusted.
  • the set of the resin packing 18 and the fixing member 20 and the set of the resin packing 30 and the fixing member 32 constitute a pressing member for pressing the peripheral portions of the window members 14 and 26 to the cell 4 side, respectively.
  • the resin packings 18 and 30 are in surface contact with the peripheral portions of the window members 14 and 26, respectively, and stably press the window members 14 and 26 toward the resin packings 16 and 28.
  • the window members 14 and 26 are made of a material that is transparent to the wavelength of light used for measurement, such as fused quartz, quartz, hard glass, and engineering plastic.
  • a material that is “transparent” to the wavelength of light used for measurement means that the transmittance of the wavelength of light used is 80% or more. “Transparent” in the following has the same meaning.
  • the material of the resin packing 16, 18, 28 and 30 is a material having corrosion resistance, chemical resistance, elasticity and resistance to inertia deformation, such as PCTFE (polychlorotrifluoroethylene), PEEK (polyether ether). Ketone).
  • window members 14 and 26 A preferred embodiment of the window members 14 and 26 will be described with reference to FIGS. 3A and 3B.
  • the lens portions 14a and 26a at the center of the window members 14 and 26 have convex curved surfaces on one surface side, and the side surfaces of the convex portions are orthogonal to the flat peripheral edge portions 14b and 26b around the lens portions 14a and 26a.
  • the surfaces (curved surfaces) having the curvatures of the lens portions 14a and 26a have a surface roughness of 0.2 ⁇ m or less, whereas the side surfaces 14c and 26c of the lens portions 14a and 26a and the convex side of the peripheral portions 14b and 26b (in the drawing)
  • the surface on the upper side has a surface roughness of 12.8 ⁇ m or more, and has a ground glass shape.
  • the light transmittance of the peripheral portions 14b and 26b is greatly inferior to the light transmittance of the curved surfaces of the lens portions 14a and 26a. Thereby, the incidence of light from portions other than the lens portions 14a and 26a is prevented. Further, since the surface roughness of the side surfaces 14c and 26c of the lens portions 14a and 26a is 12.8 ⁇ m or more, the frictional resistance of the side surfaces 14c and 26c is increased, and the window member 14 is easily held by tweezers or the like. .
  • the side surfaces 14c and 26c of the lens portions 14a and 26a are orthogonal to the peripheral portions 14b and 26b, but the angle formed between the side surfaces 14c and 26c and the peripheral portions 14b and 26b is greater than 90 degrees. Also good. Further, the side surfaces 14c and 26c do not need to be straight from the proximal end side to the distal end side of the lens portions 14a and 26a, and may be curved.
  • Such window members 14 and 26 can be manufactured by cutting out from one block 34 as shown in FIG. Specifically, a block 34 made of a material transparent to the wavelength of light used for measurement is prepared (see FIG. 1A), and cutting is performed so that the entire surface is a curved surface (FIG. 1A). (See (B)). Thereafter, by performing a cutting process using rotation so that the peripheral edge of the curved surface of the block 34a having one curved surface becomes a flat surface, both surfaces are flat around the curved lens portions 14a and 26a. Peripheral portions 14b and 26b are formed. The surface processing of the curved surfaces of the lens portions 14a and 26a may be performed before or after the formation of the peripheral portions 14b and 26b.
  • the lens portions 14a and 26a do not necessarily have to have side surfaces orthogonal to the surfaces of the peripheral portions 14b and 26b.
  • the window members 14 and 26 may be formed by bonding a substantially hemispherical lens member 38 to one surface of a transparent flat plate 36 with a matching oil 40.
  • the flat plate 36 and the lens member 38 may be bonded by fusion bonding or the like.
  • one side has a substantially hemispherical shape and the other side (lower side in the figure) has a cylindrical shape in a through hole provided in the center of the ring-shaped base material 42. It may be configured by press-fitting the transparent lens member 44.
  • the base material 42 constitutes the peripheral portions 14b and 26b of the window members 14 and 26. However, since this portion does not need to transmit light, the material of the base material 42 may not be transparent. .
  • An example of the material of the base material 42 is polyimide.
  • the lens portions 14 a and 26 a of the window members 14 and 26 provided on one end side and the other end side of the cell 4 have convex curved surfaces on the surface opposite to the cell 4.
  • the present invention is not limited to this, and the lens portion 14a, such as a convex curved surface on the cell 4 side, a convex curved surface on both sides, a concave curved surface on at least one side, one convex curved surface and the other concave curved surface.
  • the present invention can also be applied when the lens 26a has various lens shapes.
  • peripheral portions 14b and 26b having flat surfaces are provided around the lens portions 14a and 26a, and the pressing members made of the resin packings 18 and 30 are in surface contact with the peripheral portions 14b and 26b. It only has to come to do.
  • the window members 14 and 26 have the same structure. However, the window members 14 and 26 do not necessarily have the same structure, and have different structures. Also good.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Measuring Cells (AREA)

Abstract

L'invention concerne une cuve à circulation pourvue d'un boîtier, d'un élément de fenêtre et d'un élément de pression. Une cuve sert à permettre à un échantillon de circuler à travers elle à l'intérieur du boîtier. Une ouverture dans la cuve est ménagée sur au moins un côté d'extrémité de la cuve. Le boîtier présente une surface plate au niveau du bord de l'ouverture. L'élément de fenêtre présente une partie lentille dans sa partie centrale et les deux extrémités de l'élément de fenêtre présentent une partie périphérique plate. Une surface de la partie périphérique de l'élément de fenêtre est opposée à la surface plate du boîtier de façon à sceller l'ouverture. L'élément de pression est disposé sur le côté opposé de l'élément de fenêtre par rapport à la cuve, présente un trou servant à permettre à la lumière de passer dans sa partie centrale, est en contact de surface avec l'autre surface de la partie périphérique de l'élément de fenêtre, et presse l'élément de fenêtre vers le côté cuve.
PCT/JP2016/074831 2016-08-25 2016-08-25 Cuve à circulation WO2018037536A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2016/074831 WO2018037536A1 (fr) 2016-08-25 2016-08-25 Cuve à circulation
US16/318,789 US10578544B2 (en) 2016-08-25 2016-08-25 Flow cell
JP2018536006A JP6551609B2 (ja) 2016-08-25 2016-08-25 フローセル

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/074831 WO2018037536A1 (fr) 2016-08-25 2016-08-25 Cuve à circulation

Publications (1)

Publication Number Publication Date
WO2018037536A1 true WO2018037536A1 (fr) 2018-03-01

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ID=61246501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/074831 WO2018037536A1 (fr) 2016-08-25 2016-08-25 Cuve à circulation

Country Status (3)

Country Link
US (1) US10578544B2 (fr)
JP (1) JP6551609B2 (fr)
WO (1) WO2018037536A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020170377A1 (fr) * 2019-02-21 2020-08-27 株式会社島津製作所 Détecteur de chromatographe
WO2023189628A1 (fr) * 2022-03-30 2023-10-05 富士フイルム株式会社 Cuve à circulation et procédé de mesure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102328165B1 (ko) * 2021-05-25 2021-11-17 마이크로어낼리시스 (주) 유체 시료 분석을 위한 광학 검출 장치

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JPH0242337A (ja) * 1988-04-01 1990-02-13 Perkin Elmer Corp:The 分光光度計用の検出器セルアセンブリ
JP2007502446A (ja) * 2003-08-11 2007-02-08 スリーエム イノベイティブ プロパティズ カンパニー 光密マウントを備えた光学レンズ
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JP2014055784A (ja) * 2012-09-11 2014-03-27 Shimadzu Corp フローセル
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Publication number Priority date Publication date Assignee Title
US4488776A (en) * 1982-09-30 1984-12-18 M.U. Engineering & Manufacturing Inc. Plastic lens cell
JPH0242337A (ja) * 1988-04-01 1990-02-13 Perkin Elmer Corp:The 分光光度計用の検出器セルアセンブリ
JP2007502446A (ja) * 2003-08-11 2007-02-08 スリーエム イノベイティブ プロパティズ カンパニー 光密マウントを備えた光学レンズ
JP2009501903A (ja) * 2005-07-12 2009-01-22 サルトン，スコット，エイチ． 流体中粒子探知用の高開口数散光計器
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2020170377A1 (fr) * 2019-02-21 2020-08-27 株式会社島津製作所 Détecteur de chromatographe
JPWO2020170377A1 (ja) * 2019-02-21 2021-12-02 株式会社島津製作所 クロマトグラフ用検出器
JP7147952B2 (ja) 2019-02-21 2022-10-05 株式会社島津製作所 クロマトグラフ用検出器
WO2023189628A1 (fr) * 2022-03-30 2023-10-05 富士フイルム株式会社 Cuve à circulation et procédé de mesure

Also Published As

Publication number Publication date
US10578544B2 (en) 2020-03-03
JPWO2018037536A1 (ja) 2018-12-20
JP6551609B2 (ja) 2019-07-31
US20190187045A1 (en) 2019-06-20

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